The South Beach Diet does not stipulate specific brands of whole wheat or whole grain bread. However, the diet strongly emphasizes the importance of carefully checking the labels for the ingredients, regardless of the chosen brand, according to SouthBeachDiet.com.
The South Beach Diet states that whole grains shouldn’t be re-introduced into a person's diet until phase two. Once at this stage, certain types of bread are allowed, as long as they meet the whole grain requirements. The South Beach Diet explains that the label needs to include “100 percent whole wheat,” “100 percent whole rye,” or “100 percent whole oats." The chosen brand of bread should also have no more than 3 grams of sugar per serving and no trans-fats. An additional requirement is that it has at least 3 grams of fiber per serving.